SOLUTION: A cow is tied to a post at the centre of square grazing field of size 25 m by a rope 10 m long. Find, correct to two decimal places the percentage of the field the cow is able to g

Algebra ->  Test -> SOLUTION: A cow is tied to a post at the centre of square grazing field of size 25 m by a rope 10 m long. Find, correct to two decimal places the percentage of the field the cow is able to g      Log On


   

Question 1163470: A cow is tied to a post at the centre of square grazing field of size 25 m by a rope 10 m long. Find, correct to two decimal places the percentage of the field the cow is able to graze on. (Take π = 22/7)
Answer by ikleyn(52802) About Me  (Show Source):
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The area of the square is  25^2 = 625 square meters.


The area of the circle is  pi%2A10%5E2 = 100%2Api square meters.


The percentage is  %28100%2Api%2F625%29%2A100 percents.


Substitute here  pi = 22%2F7 and use your calculator to complete the job.


If you do not have a calculator, use this free of charge online calculator at the site


    https://desmos.com/calculator